So when you put the login button plugin on an app it seems to display the user's friends that are using said app. It displays this even to users that have NOT allowed the app access yet. For example, if you go to "Henry's Cooking App" but have never Logged into the app thru facebook, it will still show you your friends that are using the app.
What I'm trying to do is use this feature to grab an array of fb-userids from the plugin so I can do a query on my DB to show the POTENTIAL user a little more info. For example let's say you have 2 friends that already use "Henry's Cooking App": Joe and Karen. If I could get their userid I could then show you something like "Joe just cooked Veal Scallopini, and Karen is perfecting her Tonkatsu Curry".
I know you could do this easily IF you had the authentication token, but that is only obtained after the user logs in. I'm trying to leverage the fact that fb seems to think it's OK to show your friends that are using the app BEFORE you sign up for the app.
The only super hacky way I could think of to do it is the fact that I could pull the href attribute of elements matching $(".uiFacePileItem a") which gives a link to the user profile which I could then grab the username or UID from. This seems like it could break easily though, anyone have a better idea? Thanks!
The only super hacky way I could think of to do it is the fact that I could pull the href attribute of elements matching $(".uiFacePileItem a") which gives a link to the user profile which I could then grab the username or UID from.
You can’t do that, because the Facebook login dialogs are not running under your domain – so the Same Origin Policy prevents you from interacting with the DOM of these dialogs.
I'm trying to leverage the fact that fb seems to think it's OK to show your friends that are using the app BEFORE you sign up for the app.
Well, it’s certainly (more) OK if Facebook does that – because that doesn’t give any information away to third parties (meaning you as the app developer/provider) – only the user sees that.
It would not be OK if Facebook would let you access this info, at a point where I haven’t even decided to use your app yet – totally a case of „none of your business”.
After I decide to use your app, you may have access to certain information. Before that – No Way, José.
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I am new to REST APIs, I am actually not looking for any workarounds, I just need to clear my concept because I know I am missing some very important information which can easily solve my problem.
For E.g I made a small website, let's say using angular.js, where I will list some information or some items.
Consider it as an open website for now, everyone is getting same list. Anyone can come to the page and see the list of items. Simple.
Lets say the URL to this list is
https://www.example.com/api/list/v1
Result returned
1. abc
2. cde
3. efg
4. hij
Perfect!
Now my site got traffic, and I decided to implement user thing on my website, so that every user can only see his own information.
So I changed the rest api url to this:
https://www.example.com/api/list/v1/12345
where 12345 is userid.
The user with the user id came on the website, logged in, and browsed the list, by chance he went to the source of the page, and he found the url to list information.
He copied the url and started to use different user id's, he might get lucky any time.
I am not talking about implementing any type of security up til now, there must be several ways to secure it.
My main concern is that isn't it a large security hole, or we can call it an invitation, for injections?
So I just want to clear my understanding, where I am wrong?
Thanks
This is not some security loophole. This is the way it is supposed to work.
Let's put aside the case of APIs. Consider the simple example::
I have a url: www.example.com/jobs/
This will list all the jobs on my website. No authentication or permission of any sort is required to access this data. I am providing it to every user that visits my website. Now I need a way to figure out if the user visiting my website wants to filter the jobs available on my website. So I provide this option in url kwargs. This will look something like::
www.example.com/jobs/java/
So, now the list will contain the data only for Java jobs. Plain and simple.
Now some day I decide that I will let only the registered users to view Java Jobs. So, I introduce a new check in my View that lets you access the java jobs only if you are logged into my website. Otherwise it redirects you to the login page. Depending on the requirement, you put restrictions on the data being sent to the user.
Same is the case with APIs. If you allow the data to be available to any user that uses the API, there is a flaw with your design and not with the concept of APIs. APIs are just the implementation of your logic.
If you don't want a user with id 12345 to access the data of a user with id 123, you have got to restrict the permissions on the API code. You have got to handle themselves. The API will respond to your code.
Hope this clears out everything.
I am a new member of a team at my company reviving a legacy product that had Facebook integration, and we wish to continue developing the Facebook side of things, but we can't seem to find the credentials for logging into the app, or even who has access to it.
The app we are trying to recover is "HaloMobile". One thing to note though is the app name on posts is no longer a link. Does this mean the app has been disabled somehow?
I'm obviously not asking for credentials. At this point I'm just trying to "find" the app and possibly determine who is currently assigned as the administrator role, or what my options are. If there is an email address associated with the app, perhaps we can send a transfer request to that email?
If you could get retrieve two piece of information from your code-base, which are App ID and App Secret then you can retrieve the list of roles assigned in app using the following end point,
https://graph.facebook.com/<App_ID>/roles?access_token=<App_ID>|<App_Secret>
And once you know the role, along with the user Ids of the user assigned to it, you can move forward to recover the App by contacting him.
Also, you might want to give this documentation about Application a look, which lists out various fields you can retrieve for getting the required information to get access to your application back, like user_support_email
https://graph.facebook.com/<App_ID>?
fields=name,description,creator_uid,user_support_email
&access_token=<App_ID>|<App_Secret>
We're trying to use the Facebook Authenticated Referrals feature on our website.
Right now it works fine when one user (Alice) uses a Feed Dialog to post to her wall and another user (Bob) clicks on Alice's post. Bob sees an Auth Dialog before navigating to our website.
But our app doesn't (currently) use Feed Dialogs; we just have Like buttons everywhere. I was hoping/expecting that when Alice clicks the Like button in an article on our site, and Bob clicks on Alice's "Like" post, Bob would get an Auth Dialog.
Am I just misconfiguring my site/app somehow? Is it possible to get Authenticated Referrals from Likes at all?
I didn't realise this was potentially possible - I assumed it would work if the liked URLs were all http://apps.facebook.com/{YOUR NAMESPACE}/ URLs - if this isn't working it sounds like either a bug or a fairly reasonable feature request.
If the likes are to URLs outside of your Canvas URL I wouldn't really expect this to work, because the links are not definitely associated with your canvas app
«If you need access to more information, such as the user's email address, etc. you must request permissions for this information. If you can do this by adding the permissions you need to the scope attribute of the Login Button like below»
http://developers.facebook.com/docs/guides/web/
Check the link, I've waste enough time but still not understand, why should we ask grant permission for our application twice — in App Settings first and <div class="fb-login-button" data-scope="read_stram, offline_access"> here is the second one. Just check your data-scope attribute.
<fb:login-button> attribute is scope, you can read a bit about it by the link below.
http://developers.facebook.com/docs/reference/plugins/login/
In a Facebook bug, a FB engineer responded to say: "this is currently the design of authenticated referrals. It only happens with Open Graph app publishes."
So, at least for now, no authenticated referrals are possible for Facebook Like links.
I'm trying to add a "share via twitter" link to our website. I'm aware of the standard http://twitter.com/home?status=TWEET method, and it works good enough for my purposes when the user is logged in to twitter already.
If, however, the user is not logged in, twitter displays the login form first (which is only reasonable). After the login, the home screen is displayed without the tweet content.
Am I missing something obvious, or is this a know flaw in this method? If so, what is the easiest way (apart from using services like TweetMeme, which I noticed asks for login in advance) to make the share button work as expected?
If the user is not signed in when accessing http://twitter.com/home?status=TWEET it seems that the status is indeed forgotten. This would be a Twitter website issue and not something you're doing wrong.
Update: Use this URL instead: http://twitter.com/intent/tweet?text=TWEET
TweetMeme, on the other hand, uses its own Twitter "application" via the OAuth authentication, requiring users to log in before retweeting using TweetMeme, and is smart enough to include the tweet message in the OAuth callback URL so that it's not forgotten.
So really, you can:
Use TweetMeme, where the user would have to log in, but at least have the tweet be remembered once that's done;
Create your own Twitter application that uses the same tweeting functionality as TweetMeme; or
Use Twitter.com's less-than-desirable status updater and hope the user is logged in, or hope that they're smart enough to click the back button a couple times and click on your link again if needed.
Just use the following url and parameters
http://twitter.com/share?text=YOUR-TEXT&url=YOUR-URL
Then it works.
I have a native (FBML) Facebook Application. I do not want to push the application visitors through the authorization process, however I do want to know their Facebook ID.
Is it possible to find the visiting users Facebook ID without requiring them to "Authorize" my Application?
Before, I said it couldn't be done - but it can.
http://developers.facebook.com/docs/authentication/canvas
Read that, it's excellent. You need to decode the Base64 string and check the signature is correct, but other than that it gets you the user id among other stuff (like a temporary access token for graph.facebook.com)
REMEMBER : You need to change the settings in the Migrations tab for the information to come through! It's a vital step, but can be overlooked...
Hope this helps :)
Stuart