I created a sample application in which the user who has Consumer Key, Auth Token, Auth Secret etc information can send message, Follow, UnFollow. For the User I am going to follow. I don't know the aforementioned information. So Far it is good, and Working.
Question : Does the Twitter API give the provision to follow authenticated User. Can I make a user whose credentials I don't know follow the Authenticated User?
Variables consumer_key, consumer_secret are set at application level, while auth_token and auth_secret are user specific.
So if you ask whether an authenticated user can make other user follow him, answer is NO.
But if you ask about whether your application can make someone's account do something, answer is YES provieded it is authorized to do so by that particular someone.
Related
I'm building an app where the user will receive an invite to join a team.
The invite link is unique to the user, and when the user hits the sign-up page, they they can login using oauth (google).
After the user goes through the authentication and gets passed back to my app, I need to get their invite code, so I can look it up in the db and add them to the correct team.
I thought I could pass a state variable to the oauth provider which would get passed back to me like auth?state=INVITE_CODE, but when I send a state parameter to google in my auth request, it doesn't respond at all.
What's the best way to accomplish this?
I'm using express passport if that makes any difference.
I was WAY over thinking this, so hopefully this will help somebody else.
If you look at the res.headers.referer it is actually your original link, not the link from the oauth provider, which I expected.
I have Oath working with Facebook, Google, and Twitter; however, I am having an issue with the latter where it uses an "authorization" URL each time rather than "authentication". The result is that the user is asked to authorize my app each time. With both Google and FB once the app is authorized they are not asked again when they log in. It is aware behind the scenes if the user is logged into one of those services and if so (and they already authorized my app) it logs them immediately into my app. With Twitter it will take them to an authorization screen each time.
I know this is due to the flow I have with Twitter which which says: redirect_url = auth.get_authorization_url() followed by a self.redirect(redirect_url)
The key above is "authorization" which is unaware of the user's acceptance of my app previously. In Twitter I know there is a checkbox to "allow this application to be used to sign in with Twitter". This is checked. What I am not able to find is the correct path with Tweepy that checks whether the user is already logged into Twitter and has already authorized my app.
I do save the tokens that Twitter sent back with the user at first authorization, however, I have no idea who the user is until they login so I cannot try to use these tokens for this initial part of the exercise. I should note that I don't have to use the tokens from Google or FB either at this stage.
Can Tweepy be used in the manner described above or do I need to do something else?
Thanks!
Fortunately, there is a very simple solution. When calling api.get_authorization_url, simply specify signin_with_twitter=True as a keyword argument. Your call should look like this:
api.get_authorization_url(signin_with_twitter=True)
This causes Tweepy to use the 'authenticationendpoint you mentioned, instead of theauthorization` endpoint.
I've been looking into OAuth for a while, but haven't implemented it in any of my applications yet. I'm having trouble really understanding the full concept, so I still have a few questions that I haven't found an answer to, so I hope that anyone can help me.
I want a user to be able to start my application (WP8), login to facebook / twitter / microsoft / ... .
When he gets authenticated, I want to actually save this user to my own DB so I can add some user specific stuff like preferences, posts, ... .
What do I need to save in my own DB to specify a user?
Do I need to save the token itself or is this something that will be invalidated after a while? Or do I need to specify the user's name? With other words: What can I use as a unique identifier?
And what happens when a user would authenticate with for example facebook and he deletes his account?
And one more question, would you ever allow a user to connect to an application with 2 different service providers? If so, how would you make the coupling of these 2 providers to 1 user in your own DB?
I hope my questions are clear enough!
If not, don't hesitate to ask for more information!
Kind regards,
Gert
I assume that you have your own back-end where you authenticate your own users and your WP8 application is just a client.
First, let me distinguish between a user credential and a user profile. User credential is something that validates who the user is, e.g. username/password, facebook user id supplied with a valid auth token. User profile, is what you store in your own database about the user.
You also need to distinguish between a token you use to authenticate the user and the AccessToken Facebook needs to grant you access to user's data.
So... to answer your questions:
What do I need to save in my own DB to specify a user?
Create a record with user data (like preferences, and your unique user ID), and user's login method (e.g. Facebook) and credential (e.g. Facebook's user ID). This is your user's profile.
Do I need to save the token itself or is this something that will be invalidated after a while?
You can also store the Facebook AccessToken here if you've been granted "offline access" privileges by Facebook, but that is used for Facebook's access by you... not by the user's access to your app/back-end. For user's access you could just use a mechanism similar to cookie-based authentication - it's up to you. You could use the AccessToken as a kind of a "cookie", but you would need to always check against Facebook that it's valid.
With other words: What can I use as a unique identifier?
You could treat Facebook's ID as unique (so long as you never allow another account in your user profile DB to link with the same Facebook account)
And what happens when a user would authenticate with for example facebook and he deletes his account?
It's a good idea to have users still create a username/password combination that works with you site and only rely on Facebook login for convenience. In any case, Facebook provides a "Deauthorize Callback URL" when you create an app profile on Facebook. This is called when a user deactivates your app or deletes an account with Facebook. When you receive this call, you could send your user an email when an auth link to setup a different credential so as to not lose access.
would you ever allow a user to connect to an application with 2 different service providers? If so, how would you make the coupling of these 2 providers to 1 user in your own DB?
Sure, you could do that. Say you'd want to allow a Twitter account as well. You'd need to add a Twitter user ID field to your user profile database.
Here's another tip: create an ASP.NET MVC4 project in Visual Studio - the template includes an example of how to set up a user profile database with OAuth login.
Hope it gives you the high-level overview to investigate further.
I am adding Twitter and Facebook login to a MVC 3 test application using TweetSharp and Facebook C# SDK.
Currently when a user signs in using Twitter I create a user account for that user in a user table and store the id, token, and token secret in a separate table with a foreign key to the user table. Since the id, token and token secret do not expire I can quickly locate the right user account when the user logs in next time using Twitter.
What if the very same user logs in using Facebook next time? Since Twitter does not provide email in their API and I therefore have no common piece of information to tie a user account to either Twitter or Facebook I assume I have to create a new user account for a Facebook login? Does anyone have any experience with this? Are there any ways to solve this?
I identify each user internally with a unique key. I check cookies for the user key when any user hits the site. If there's no cookie I create a new key. add it to the user database and set a new cookie. Once a user completes registration the first time by logging in with any of Facebook, Twitter or .Net membership , that key is forever married to that user.
So when an existing Twitter user logs in for the first time with Facebook, we know who they are because their user key exists. It is basically the same solution as macou suggested. Macou's has the plus of working on a new machine or if cookies are cleared, the cookie solution has the plus of not requiring additional user input.
Not really a solution, more of a work around. I was faced with the same problem and ended up forcing the user to complete thier account profile by asking for their email address before allowing them to proceed any further. This meant that if the email address coming back with the Facebook auth matched the email address created with the twitter signin then I didn't need to create another account.
The bigger difficulty was coming the other way, if the account was created by the facebook auth first. It meant an untidy marry up of accounts.
To be honest the information we got from allowing users to sign in with twitter was not worth the effort and in the end finished up only allowing Facebook auths. I'm not sure how important twitter is to your solution.
Not the perfect answer I know, but I thought I would share my experience.
You can't use just a cookie because I can login as facebook then my wife login as twitter using the same browser, you shouldn't link the two accounts in this case.
I think you need to do more than that:
Use a cookie then
Use name/first name/login name/... to see if they match.
Example:
Cookie id: 18459439731114330636, find user with id = 18459439731114330636. Found, go to 2, not found, go to 3.
Is username/first name/last name/... matches the current user? if yes, link accounts. if not, go to 3.
Create a new user.
Sorry the title is a little bit long.
So I have a twitter account and a twitter app, I want my account to be able to use "#name your information has been updated" once a particular user's information on my app is changed, in order to do
this, I need to get an access token for my own account automatically. How do I do this?
If you already have a registered app, you can few an access token and secret pair for the account that registered the application (presumably yours). You can use that pair, along with the app's consumer key/secret to make your oauth calls.
You can find your token by going into your App's settings and then selecting My Access Token on the right.