Foursquare support about django-social-auth

[omab]

Looks quite similar to Google OAuth2 implementation, take a look to it, it should be easy to mimic.

[m-misseri]

For OAuth2 is important the callback url and the domain from I testing the code?
Because in local I'm using 127.0.0.1 but in callback and in server name settings I have used another domains.....

Must i use the same domain like in facebook login testing?

Now i receive in the query string:
?error=invalid_client

and this:

HTTPError: HTTP Error 400: Bad Request

Thanks in advance omab

[omab]

Depends on the site. Some providers enforce that the domain from where the request is made must be the same as the one defined in the app configuration, others don't, but seems that foursquare is checking it.

An easy workaround is to serve the same domain from localhost, for example, let's suppose that the domain used in the Foursquare app configuration was example.com

1. Add example.com to /etc/hosts

   127.0.0.1 example.com

2. Define Django SITE_URL to use the desired domain

   SITE_URL = 'http://example.com'

3. Run the server, and open it in your browser using http://example.com:8000/. The redirect from Foursquare might lack the port number and that will pop a 404 error on your browser, just add :8000 to the URL and it should work.

[m-misseri]

Yes, i know that workaround, thanks. :-)

Can you take a look on this: http://dpaste.com/hold/543641/ ?

The authentication work:
/accounts/login/foursquare/ redirect to:

https://it.foursquare.com/oauth2/authenticate?redirect_uri=http%3A%2F%2Fmyapp.com%2Faccounts%2Fcomplete%2Ffoursquare%2F&response_type=code&client_id=**

for asking the permission, then after accepting permission the foursquare server redirect to:

http://myapp.com/accounts/complete/foursquare/?code=K**FBN34A

But now, i don't know how i can complete the authorization and why access_token is Null.

Can you help me?
Thanks!

[bremac]

cgi.parse_qs parses query strings. Foursquare responds with a JSON-formatted response, so it should be parsed with simplejson.

[omab]

Looking at your code, seems that you are inheriting from BaseOAuth instead of BaseOAuth2 (https://github.com/omab/django-social-auth/blob/master/social_auth/backends/__init__.py#L628), that should simplify and fix your issues, OAuth2 standard defines responses as JSon strings and they are decoded properly (https://github.com/omab/django-social-auth/blob/master/social_auth/backends/__init__.py#L663)

[m-misseri]

Ok, i have fixed.
Now i receive these error:
http://dpaste.com/543811/plain/
The code updated is:
http://dpaste.com/hold/543812/

Thanks for the support guys.

[omab]

Could you share the JSON server response?

[m-misseri]

Yes, it's this:

{'access_token': 'R0SMPBGO2OGYY0DZPVGM*******O'}

[omab]

Only access_token? The code that raises the KeyError is trying to get an 'id' entry from the server response, that ID is used to identify the current user with the provider. But you can override the method to suit the foursquare case, in google I needed to override it to use the email address https://github.com/omab/django-social-auth/blob/master/social_auth/backends/google.py#L50, check the details and response data, it might have some value that's unique for current user.

[m-misseri]

Now seems to work, but there is another problem.

After authorization..
if i disconnect my account (logout) /accounts/logout/ and i want to re-login with foursquare, it ask to me every time the window for asking the permission..

Now i'm using:
https://foursquare.com/oauth2/authorize
?client_id=YOUR_CLIENT_ID
&response_type=code
&redirect_uri=YOUR_REGISTERED_REDIRECT_URI

If i use:
https://foursquare.com/oauth2/authenticate
?client_id=YOUR_CLIENT_ID
&response_type=code
&redirect_uri=YOUR_REGISTERED_REDIRECT_URI

After the login the foursquare server don't reply any, 'error when loading the page'.. but the first auth work correctly.

The code is this:
http://dpaste.com/hold/544013/

Who can help me? :-)

Thanks!

[omab]

Mmm... I didn't understood you, are you getting an error or not? Which is the error?

[m-misseri]

Sorry for my bad english.

The problem is this:
The foursquare server asks me the permissions for the login every time, instead that only the first time.

Understand?
There are no errors..

[omab]

No prob at all, it's not my main language, so that makes things worse :D

What happens when you change the service to "/oauth2/authenticate"? Twitter does the same, /authorize/ asks user permission every time, while /authenticate/ only asks once.

[m-misseri]

If I change to /authenticate/ the system redirect here:

https://foursquare.com/oauth2/authenticate?redirect_uri=http%3A%2F%2Fmyapp.com%2Faccounts%2Fcomplete%2Ffoursquare%2F&response_type=code&client_id=GIA4VU1ZHJIYT05325FYXS1FZGKVKRSNHOJYWYSXF0***

but the link not work :(
Error connection.

[omab]

This code http://dpaste.com/hold/544082/ worked properly for me, it's a simplification from your last code, I've removed the overridden functions because they weren't needed at all. It worked with /authorize/ and /authenticate/ properly.

You need to add this two settings to your local_settings or what ever place you keep them::

FOURSQUARE_CONSUMER_KEY = 'YOUR_CONSUMER_KEY'
FOURSQUARE_CONSUMER_SECRET = 'YOUR_CONSUMER_SECRET_KEY'

I'll merge your work if you create a fork of the project and add this backend.

[m-misseri]

Thanks, but now return to me: ?error=redirect_uri_mismatch
whit this error:
http://dpaste.com/hold/544089/

Must I set it?

Thanks..another ;)

[omab]

That's because Foursquare is checking the referer url with the one you defined on their app. I've defined http://myapp.com:8000/complete/foursquare/ as redirect on foursquare site, and check the site locally opening http://myapp.com:8000/ (previous /etc/hosts workaround).

[m-misseri]

Oh yeah!
My error was
Callback URL http://myapp.com:8000/complete/foursquare/
instead of
Callback URL http://myapp.com:8000/accounts/complete/foursquare/

In the foursquare settings :)

Thanks Thousands omab! Seems to work all correctly!

I'll create the fork soon

[m-misseri]

Ok, created :)
This is my first fork.. i must exercise with git because this is the first time that i use it :)
https://github.com/bedspax/django-social-auth
I'v mistake?
Let me know.

[omab]

The fork is OK, but contrib backends should be on backends/contrib directory, could you move it?

[m-misseri]

Moved! :-)

[omab]

Merged https://github.com/omab/django-social-auth/tree/4f53065e1b42da98fc3f241407e68ada0b1922c5

Thanks