Callback URL not approved by Twitter - twitter

My application built upon spring-social-twitter that enables users to sign in with Twitter has stopped working recently.
I've got an error message as below:
Callback URL not approved for this client application. Approved callback URLs can be adjusted in your application settings
Note: I'm using Spring Social Twitter version 1.1.2.RELEASE. And if you use Spring Social Twitter version 1.1.0.RELEASE, you might get a slightly different error message as below:
POST request for "https://api.twitter.com/oauth/request_token" resulted in 403 (Forbidden); invoking error handler

Twitter recently (in May 2018) enforced that sign-in-with-Twitter users must whitelist callback URLs for security reasons (see the announcement).
This means callback URLs have to be explicitly and identically set up for all supported third-party applications. You can setup the callback URLs in your Twitter's application setup page: https://apps.twitter.com
For example, if your callback URL is http://localhost:8080/myApp/signin/twitter, you must add it to the list of Callback URLs in your Twitter's application setup page exactly as it is: http://localhost:8080/myApp/signin/twitter
See also the documentation on Twitter callback URLs.

I struggled with this since Twitter made the changes to increase security. My android app would use a callback URL and the same URL in the Intent Filter. But since the change, the URL I was using had to be registered in the Twitter developer portal. I was using ouath://myapp, but Twitter does not accept that as a valid URL (website).
After a bit of digging, I found that for apps you can specify any scheme but only as a scheme. For example I used myapp:// as the callback URL.
In my app, my callback URL was myapp://whatever, and in the Intent filter, I used :
<data android:scheme="myapp" android:host="whatever">
Twitter accepted the callback URL and it correctly redirected back to my app after the user authenticated with their Twitter credentials.
I has originally used just a normal website, and that worked too, but after validation by Twitter, it asked if I wanted to redirect to My App, or to a Chrome browser. Using the above approach it will simply return to your app.
After I did all this, I realized that I could have just added Oauth:// as a call back URL and my app would have worked without change.

I fixed it by adding those callback URLs to Twitter's whitelist.
twitterkit-{Twitter API Key}:// for iOS.
twittersdk:// for Android.

Related

Twitter API: How Do I Create a Protocol Only Callback URL?

In Twitter's Developer Documentation we can read the following:
Mobile apps with app-specific protocols must use just the protocol
Example:
You want to use example://authorize as your callback URL
Add this to both your Twitter app dashboard and your call to oauth/request_token: example://
However; in the Developer's Dashboard I am not able to enter a protocol only URL, or any URL beginning with other than http or https.
My reason for wanting a protocol only URL is so that I can use in an iOS app that uses OAuthSwift to access web APIs.
Any ideas anybody?
I haven't found the answer to the original question but I do have an excellent work around. So, for anyone else who might land here:
The web app at https://oauthswift.herokuapp.com/callback
will perform redirections. If you access that web site with the url https://oauthswift.herokuapp.com/callback/target then it will redirect to oauth-swift://oauth-callback/target.
So:
In the Twitter Dashboard enter https://oauthswift.herokuapp.com/callback/SomeName for your app's callback URL
Register oauth-swift as a URL scheme in your iOS app's URL Types
In your iOS app, use https://oauthswift.herokuapp.com/callback/SomeName as the callback URL for the OAuth authorization request.
Voila. Twitter will redirect to https://oauthswift.herokuapp.com/callback/SomeName which will in turn redirect to oauth-swift://oauth-callback/SomeName, allowing your iOS app to regain control of the flow.
If you find any of this confusing then this might help: http://iosdevelopertips.com/cocoa/launching-your-own-application-via-a-custom-url-scheme.html

Oauth suddenly not working on iphone (with FS app installed only)

Our iphone app allows for sign in via Foursquare via oauth. It was working fine and recently stopped working.
The error we get is: Connecting Failure: Callback uri is not valid for this consumer.
HOWEVER, if the user does not have the foursquare app installed on their phone it works fine as before. It seems as if FS is now doing a redirect to handle the oauth inside the FS app and this fails when attempting to return to the originating application. Via safari it seems to work.
This is on ios 9.
Solutions?? Thanks!
We've changed to use a SafariViewController and this seems to force Foursquare to not to this strange in-app redirect, solving the issue. This is also Apple's preferred oauth method, so probably the way to go.
Still seems like a problem on the Foursquare side that they may want to address for others however. I'm closing this question. Thanks.
Where does your redirect URL point? If you want it to launch your app after completion you should point to the iTunes store (pre-iOS9) link for your app or the universal link (iOS9 onwards).
More information on redirects for the native foursquare app is available in the README here: https://github.com/foursquare/foursquare-ios-oauth/
How to create a universal link in iOS9 https://www.appsflyer.com/blog/how-to-set-up-ios-9-universal-links-for-your-app/
A callback url is a webpage loaded after your web app has been
verified. In this case, you need to specify a page for to send data to
after authentication
Double check your Foursquare credentials and update the callback uri to a valid link. Tutorial link
Please follow the below points, may be one resolves your issue:-
Enter the callback in foursquare account in addcallback methods. Then in your code add the call back to the provider before you authorize. (Reference here).
You're getting that error because the URL you're pointing your users to (foursquare.com/oauth2/...) includes a redirect_uri parameter that doesn't match with what you configured in your app's settings under https://foursquare.com/developers/apps. Make sure these match!

iOS - Venmo API integration: Web Redirect URL

I'm trying to register my App on Venmo's developer site so that I can properly use their API, but I'm stuck trying to figure out what the required "Web Redirect URL" field is for. According to the docs, it says it is the following:
Venmo will redirect your users to this address. Must be formatted like
http(s)://www.example.com/example_redirect_url
As far as I could gather this was a URL scheme that would allow Venmo to redirect you back to your app after payment processing was completed on their side, but in researching how to set up a URL scheme the format is something like "[scheme-name]://", not "http://...."
The other thought I had was that this was just a url that contained a server-side or javascript redirect to that aforementioned URL scheme, but that seems like an unnecessary extra step. I also have a few other theories on what it could be, so I'm really just not sure which one it is...
I was running into the same problem. If your website is deployed you can use the redirect that your hosting service provides you. If you're not deployed then you can set it localhost.
Example: http://localhost:8000/auth/venmo/callback

ios flickr api: Flickr callback URL not being called

I'm attempting to hook my application into Flickr but having issues during the Authentication process.
I've followed instructions in:
https://github.com/devedup/FlickrKit
I've created a CFBundleURLTypes for my application (let's call it myapp://) and tested that it works (i.e. I type myapp:// in a safari). I've successfully called the authentication URL in Flickr, it shows the login, asks the user to grant my app the necessary permissions then instead of redirecting back to my app via my URL...it does nothing, and the app is not authenticated.
I used FlickrKit demo app replacing its api key/secret/CFbundleUrltypes with mines and the issue is the same, so the problem is not in the code but rather in the way i registered my app in flickr. Said that...I just followed the instructions in Flickr "Edit Authentication Flow" so I guess the issue is with the callback url I put in flickr. I used myapp://auth? as described in many posts in the internet but does not authenticate or call back my app.
This is not the same issue reported here:
Flickr Authentication Flow and iPhone
but rather similar to the unanswered post:
flickr callback URL not working
The Info.plist for the custom URL handler and the AppDelegate code are a copy&paste from the flickrKit demo app [no need to reinvent the wheel] and anyway even after changing api key secret and url in flickrKit demo app with mines...the app is not called back, so it must be something wrong in my app registration.
Anybody experienced a similar behavior ? i ruled out objective-c code and callback url as the issue, so what is left is the flickr part but not sure where to look for help... so i wrote this post.
Thanks for any tip,
dom
Probably this is a problem of api signature calculation. All the parameters passed via method should be used to calculate an api signature.

What's a redirect URI? how does it apply to iOS app for OAuth2.0?

Beginner programmer here, please pardon ignorance & explanations will be really nice :)
I've tried to read the tutorials for a certain OAuth 2.0 service, but I don't understand this redirect URI... in my particular context, let's say I'm trying to build an iPhone app that uses OAuth 2.0 for some service. I have an App ID that was generated, but i need to provide some sort of redirect URI to generate the API key.
Is this a URL that I'm supposed to host somewhere myself?? As the name suggests, I would think that the redirect URL is supposed to "redirect" someone somewhere. My only guess is that it's the URL a user is redirected to after they log in to the service.
However, even if that assumption is correct, I don't understand one other thing - how can my app be opened again after I've sent them to the browser for the user login?
Read this:
http://www.quora.com/OAuth-2-0/How-does-OAuth-2-0-work
or an even simpler but quick explanation:
http://agileanswer.blogspot.se/2012/08/oauth-20-for-my-ninth-grader.html
The redirect URI is the callback entry point of the app. Think about how OAuth for Facebook works - after end user accepts permissions, "something" has to be called by Facebook to get back to the app, and that "something" is the redirect URI. Furthermore, the redirect URI should be different than the initial entry point of the app.
The other key point to this puzzle is that you could launch your app from a URL given to a webview. To do this, i simply followed the guide on here:
http://iosdevelopertips.com/cocoa/launching-your-own-application-via-a-custom-url-scheme.html
and
http://inchoo.net/mobile-development/iphone-development/launching-application-via-url-scheme/
note: on those last 2 links, "http://" works in opening mobile safari but "tel://" doesn't work in simulator
in the first app, I call
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:#"secondApp://"]];
In my second app, I register "secondApp" (and NOT "secondApp://") as the name of URL Scheme, with my company as the URL identifier.
Take a look at OAuth 2.0 playground.You will get an overview of the protocol.It is basically an environment(like any app) that shows you the steps involved in the protocol.
https://developers.google.com/oauthplayground/
redirected uri is the location where the user will be redirected after successfully login to your app. for example to get access token for your app in facebook you need to subimt redirected uri which is nothing only the app Domain that your provide when you create your facebook app.
If you are using Facebook SDK, you don't need to bother yourself to enter
anything for redirect URI on the app management page of facebook. Just setup a
URL scheme for your iOS app.
The URL scheme of your app should be a value "fbxxxxxxxxxxx" where xxxxxxxxxxx is
your app id as identified on facebook.
To setup URL scheme for your iOS app, go to info tab of your app settings
and add URL Type.

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