tried to send post to facebook api to scrape my page at load.
http://i.stack.imgur.com/3Jd0y.png
what is wrong with my code?
This is how you use FB.api:
FB.api('/', 'post', {
id: 'url-to-scrape',
scrape: true
}, function (response) {
console.log(response);
});
Not sure where you got that code example from, but you should always take a look at the Facebook docs.
I you are getting invalid token means your token is not correct let me tell you how to generate token it is simply by combining your app id and app secret gotten on Facebook developers app dashboard after you have signed up check here and read url and to check errors faster on your code api, download post man here www.getpostman.com, put in your api call code in the url bar and hit send it will tell you your error. Then to get token for facebook fancount,pageid,likescount, you can do a search for more info on graph.facebook.com on google. contact me if there is problem.
$appid = "xxxxxxxxxxxxxxx";
$appsecret = "yyyyyyyyyyyyyyyyyyyyyyyyy";
//get it from your dashboard
$token = $appid .|. $appsecret key
Related
I am using Ember CLI + ember simple auth torii link
to get authentication code from facebook for my ember app.
This is my environment.js file
ENV['torii'] = {
providers: {
'facebook-oauth2': {
apiKey: '865549306850377',
scope: 'email',
//redirectUri: window.document.location.href
redirectUri: 'http://localhost:4200/'
}
}
};
And my login controller looks like this -
facebook: function() {
var _this = this;
this.get('session').authenticate('simple-auth-authenticator:torii', 'facebook-oauth2').then(function(data){
console.log("status - ", _this.get('session'));
});
}
And login.hbs -
<li><button {{action "facebook" "facebook-oauth2"}}>Facebook OAuth2</button></li>
After the user clicks on the link, a facebook popup opens and ember app gets a token.
How do I get the user's email id along with this token ?
Has anybody faced a similar issue ?
So you're using oauth2, so all you're ever going to get is an authorization token. With this token, you can then go off and request other information. The token is basically just there to speed up the validation of users against your application.
If you want to get user information, you would need to create another method (probably on your server-side), which swaps the authorization code for an access token: like so (or alternatively you can request an access token directly, which would remove the need for a server-side solution.
Using the access Token you can then request the Facebook User ID, using the debug token endpoint, and after that you will be able get to any endpoint to get the information you need.
I have doubts about security of my process of authentication oauth with facebook..
I use login for web with javascript sdk with fb button:
I get an Access Token successfully and pass it to server(calling check_facebook_session.php) to make API call to Facebook Provider..
In the following code there is also the log in console of access token.
Everything works!!! on the server I use the php sdk to call the API REST with APPID, APPSECRET and ACCESS_TOKEN:
**
Now my question, have I a security problem?
Is a bad idea to pass the token to the server?
The token that is visible on the client can be used WITHOUT APP SECRET to get information about the user logged?
**
Note: Google+ Sign-In for server-side apps Implementing the one-time-code flow with step:
- Include the Google+ script on your page.
- Add the sign-in button to your page.
- Sign in the user.
- Send the authorization code to the server.
as explained in: https://developers.google.com/+/web/signin/server-side-flow
Unlike facebook google in the js client return a CODE, not an ACCES TOKEN and the server receive and use it to request ACCESS TOKEN.
Thanks..
Following is the javascript code for facebook:
window.fbAsyncInit = function() {
FB.init({
appId : FACEBOOK_APP_ID, // App ID
status : true, // check login status
cookie : false, // enable/disable cookies to allow the server to access the session
xfbml : true // parse XFBML
});
FB.Event.subscribe('auth.authResponseChange', function(response)
{
if (response.status === 'connected')
{
var accessToken = FB.getAuthResponse()['accessToken'];
console.log(accessToken);
$.ajax({
type: 'POST',
url: check_facebook_session.php,
contentType: 'application/x-www-form-urlencoded; charset=utf-8',
processData: false,
data: 'token=' + accessToken,
success: function(result)
{
if(result == 'SUCCESS'){window.location.href = fb_callback_url}
},
error: function(xhr)
{
alert('Request Status: ' + xhr.status + ' Status Text: ' + xhr.statusText + ' ' + xhr.responseText);
}
});
}
else if (response.status === 'not_authorized')
{
FB.login();
}
else
{
FB.login();
}
});
};
// Load the SDK asynchronously
.......
}(document));
I did some testing and came to the conclusions that I hope can be useful.
In Facebook SDK for JavaScript it automatically handles access token storage and tracking of login status, so apps using it do not need to create their own mechanisms for doing so, and can proceed to making API calls.
The system seems safe because I believe that the callback url of the call is the site that host the page and configured between those of the facebook application, so I can change the application id in the javascript code but the sdk response with error message and get the user's token pretending to be another application. This was already obvious to those who know the flow :-)
Passes the token to the server is definitely a bad idea because it can be snorted and used by simply calling https://graph.facebook.com/me?access_token=... to get user information, In the different flow of google the token is not passed but is passed the code necessary to obtain it.
The best solution to use advantage of client and server is it:
Used in conjunction with the Facebook SDK for JavaScript,
the PHP SDK can share user sessions seamlessly across the client and server.
If people are logged in with Facebook and have authorized your app,
the JavaScript SDK can pick up the user session and persist this in a cookie,
which the PHP SDK reads without any intervention on the developer's part.
To enable this functionality, ensure that when you embed and initialize the JS SDK,
you set both the status and the cookie parameters of the object passed to FB.init() to true.
Regards..
i think it is secure because the user's data is only returned with connected status after user authentication with facebook.
https://developers.facebook.com/docs/reference/javascript/FB.getLoginStatus/
I have followed Facebook example on getting access token by using $fb->getJavaScriptHelper();
https://developers.facebook.com/docs/php/howto/example_access_token_from_javascript
$helper = $fb->getJavaScriptHelper();
$accessToken = $helper->getAccessToken();
echo $accessToken->getValue();
P.S. Add try{} catch() {} blocks, as in Facebook example for error handling.
I tried to get an app-access-token for my facebook app with this code:
APP_ACCESS_TOKEN = FB.api(
"oauth/access_token",
{client_id: APP_ID, client_secret: APP_SECRET_CODE, redirect_uri: uri},
function(response){
console.log(response);
});
which should be like:
GET https://graph.facebook.com/oauth/access_token?
client_id=YOUR_APP_ID
&client_secret=YOUR_APP_SECRET
&redirect_uri=uri
but i get an error:
code: 1
message: "Missing authorization code"
type: "OAuthException"
What is the authorization code and how can i get it?
Obtaining an App Access Token
To obtain an App Access Token, invoke the following HTTP GET request:
GET https://graph.facebook.com/oauth/access_token?
client_id=YOUR_APP_ID
&client_secret=YOUR_APP_SECRET
&grant_type=client_credentials
The API will respond with a query-string formatted string of the form:
access_token=YOUR_APP_ID|YOUR_APP_ACCESS_TOKEN
Reference: http://developers.facebook.com/docs/opengraph/howtos/publishing-with-app-token/
https://developers.facebook.com/docs/howtos/login/login-as-app/:
“Because it requires you to include your App Secret you should not attempt to make this call client-side as that would expose this secret to all your app users. It is important that your App Secret is never shared with anyone. For this reason, this call should be performed server-side”
And for the app access token, it’s the same – you should never use it client-side, because every user could spot it there and then start using it to perform actions on behalf of your app (or change many of your app’s settings).
If you have a server-side part to your application, you can simply “build” the app access token there yourself, concatenating app id and secret with a pipe symbol, app_id|app_secret.
check if users of the node.js or the JAVASCRIPT.
getLongLiveToken: function(data){
FB.api('oauth/access_token', {
client_id: data.client_id, // FB_APP_ID
client_secret: data.secret, // FB_APP_SECRET
grant_type: 'fb_exchange_token',
fb_exchange_token: data.access_token // USER_TOKEN
}, function (res) {
if (!res || res.error) {
console.log(!res ? 'error occurred' : res.error);
} else {
var accessToken = res.access_token;
if(typeof accessToken != 'undefined'){}
}
});
}
I'm not sure that exposing the APP client secret in the code is a good idea, you can take the APP token from Facebook tool "Access Token Tool" just copy the token to your code for any use https://developers.facebook.com/tools-and-support/
You can also use this POST endpoint without generating the token, just be sure its being called from the server not client-side where the app_secret is exposed to public:
https://graph.facebook.com/?id={url}&scrape=true&access_token={app_id}|{app_secret}
I'm quite confused with the access token from facebook..here is how I obtain the user's access token and use it to get data from graph API
window.fbAsyncInit = function() {
FB.init({
appId : 'app ID',
status : true,
cookie : true,
xfbml : true,
oauth : true,
});
FB.getLoginStatus(getStatus);
FB.Event.subscribe('auth.authResponseChange', getStatus);
function getStatus(response) {
if ( response.status === 'connected' ) {
var accessToken = response.authResponse.accessToken;
console.log("accessToken = " + accessToken);
$.ajax({
dataType : "jsonp",
type : "GET",
url : "https://graph.facebook.com/me/albums?access_token=" + accessToken,
success : function(data) {
$.each(data, function(index, value) {
console.log(index + ": " + value);
})
}
});
}
}
};
However, I always get an empty data. After I visit the graph API documentation here: https://developers.facebook.com/docs/reference/api/ and click on one of the graph links, I notice that the access token generated there is always different from what I retrieve from my code. For example, the current access token in the graph api documentation is
"AAAAAAITEghMBAMwuyHZCO3VOAvCm9hHpaZC9PGV9238ixsZB7zSfuplZBTZCLRj6cEViZADJlVcjOfInwvcbhqu3XBF1w4ZAxvPbexcGQZAYzb4bHAKsMbLF"
and the one in console log is
"AAAG0ZCFantJ8BAAFcMdDOyDyT4OBtjrvULEaS2o94gZAU7U1xITaogFXCZBghQP8G9bjEh3XSCATQOZCUSZCuNWFvEfypIAmcz9bkbk5qRBlHUZAOE4guW"
I think that I may have done this the wrong way. Can anyone help explain to me how to retrieve data from graph API in a correct way?
Any kinds of help will be appreciated. Thanks in advance :)
Run this URL with your authToken first:
https://graph.facebook.com/me/permissions?access_token=USER_ACCESS_TOKEN
You'll almost certainly only see basic permissions in the response, which is why you aren't getting the data from your call to the user's album.
You'll then want to run your user through the Authentication Process, making sure you request the permissions you need (probably 'user_photos' in your case).
More info is available in those two links. Good luck!
access token will never be the same. So that behaviour is correct.
Back to your problem , I think its mostly scope related issue.
I had developed a application using facebook c# sdk, In that application i did it like this:
when a post is to be submitted , redirect the user to facebook (with some parameters like appid, app-secret, auth-token and
redirect-url);
Facebook will ask the user to login with his credentials.
When the user is logged in, facebook will redirect back to the redirect-url. (with the authtoken and a new auth-code).
Then we should use this auth-code, app-id and app-secret and obtain the user-access-token. (This is done by doing a rest api call to the
url
https://graph.facebook.com/oauth/access_token?client_id=client_id&redirect_uri=redirect_uri&client_secret=client_secret&code=auth-code
This will return the user-token and expiry time for the token
And then we can post using this user-access-token to the fb.
Initially i had misunderstood the auth-code and used it as the user-access-token, and i always got the result as unauthorised token .
Please check whether this will help you or not.
I'm trying to use the Facebook Graph API to get the latest status from a public page, let's say http://www.facebook.com/microsoft
According to http://developers.facebook.com/tools/explorer/?method=GET&path=microsoft%2Fstatuses - I need an access token. As the Microsoft page is 'public', is this definitely the case? Is there no way for me to access these public status' without an access token?
If this is the case, how is the correct method of creating an access token for my website? I have an App ID, however all of the examples at http://developers.facebook.com/docs/authentication/ describe handling user login. I simply want to get the latest status update on the Microsoft page and display it on my site.
This is by design. Once it was possible to fetch the latest status from a public page without access token. That was changed in order to block unidentified anonymous access to the API. You can get an access token for the application (if you don't have a Facebook application set for your website - you should create it) with the following call using graph API:
https://graph.facebook.com/oauth/access_token?
client_id=YOUR_APP_ID&client_secret=YOUR_APP_SECRET&
grant_type=client_credentials
This is called App Access Token. Then you proceed with the actual API call using the app access token from above.
hope this helps
You can use AppID and Secret key to get the public posts/feed of any page. This way you don't need to get the access-token. Call it like below.
https://graph.facebook.com/PAGE-ID/feed?access_token=APP-ID|APP-SECRET
And to get posts.
https://graph.facebook.com/PAGE-ID/posts?access_token=APP-ID|APP-SECRET
It's no more possible to use Facebook Graph API without access token for reading public page statuses, what is called Page Public Content Access in Facebook API permissions. Access token even is not enough. You have to use appsecret_proof along with the access token in order to validate that you are the legitimate user. https://developers.facebook.com/blog/post/v2/2018/12/10/verification-for-individual-developers/.
If you are individual developer, you have access to three pages of the data (limited), unless you own a business app.
You can get the posts by simply requesting the site that your browser would request and then extracting the posts from the HTML.
In NodeJS you can do it like this:
// npm i request cheerio request-promise-native
const rp = require('request-promise-native'); // requires installation of `request`
const cheerio = require('cheerio');
function GetFbPosts(pageUrl) {
const requestOptions = {
url: pageUrl,
headers: {
'User-Agent': 'Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:64.0) Gecko/20100101 Firefox/64.0'
}
};
return rp.get(requestOptions).then( postsHtml => {
const $ = cheerio.load(postsHtml);
const timeLinePostEls = $('.userContent').map((i,el)=>$(el)).get();
const posts = timeLinePostEls.map(post=>{
return {
message: post.html(),
created_at: post.parents('.userContentWrapper').find('.timestampContent').html()
}
});
return posts;
});
}
GetFbPosts('https://www.facebook.com/pg/officialstackoverflow/posts/').then(posts=>{
// Log all posts
for (const post of posts) {
console.log(post.created_at, post.message);
}
});
For more information and an example of how to retrieve more than 20 posts see: https://stackoverflow.com/a/54267937/2879085
I had a similar use case for some weeks and I used this API:
https://rapidapi.com/axesso/api/axesso-facebook-data-service/
I could fetch all posts and comments in some minutes, worked quite well for me.