tungwaiyip.info

home

about me

links

Blog

< February 2011 >
SuMoTuWeThFrSa
   1 2 3 4 5
6 7 8 9101112
13141516171819
20212223242526
2728     

past articles »

Click for San Francisco, California Forecast

San Francisco, USA

 

Facebook OAuth Authentication Flow

I was trying to follow the Facebook OAuth documentation. I finally have it figured out. There are three parties and multiple steps involved. I have created a diagram to show the flow (the server-side flow).

Facebook OAuth Authentication Flow

This is a condensed version of Facebook's documentation of the steps required.

  1. Redirect the user to Facebook's OAuth Dialog /dialog/oauth?app_id.
    1. User authentication - If the user is not logged in, they are prompted to enter their credentials.
    2. App authorization - After the user is successfully authenticated, the OAuth Dialog will prompt the user to authorize the app.
  2. After the app is authorized, the OAuth Dialog will redirect (via HTTP 302) the user's browser to the URL you passed in the redirect_uri parameter with an authorization code.
  3. App authentication - In order to authenticate your app, you must pass the authorization code and your app secret to the Graph API token endpoint /oauth/access_token?app_id&secret&code. If your app is successfully authenticated and the authorization code from the user is valid, the authorization server will return the access token.

If you got a "Error validating verification code" in step 3, note that the redirect_uri should be the same as in step 1. See the issue on StackOverflow.

2011.02.19 [] - comments

 

 

blog comments powered by Disqus

past articles »

 

BBC News

 

Christchurch mosque shootings: New Zealand to ban military style weapons (21 Mar 2019)

 

Brexit: Theresa May at Brussels EU summit to urge short delay (21 Mar 2019)

 

Cyclone Idai: Rescuers race against time to reach survivors (21 Mar 2019)

 

Cyclone Idai: Flying over flooded Mozambique (21 Mar 2019)

 

Russia's IS families: 'Why are the children being punished?' (21 Mar 2019)

 

Giant sunfish washes up on beach in South Australia (21 Mar 2019)

 

Mount Everest: Melting glaciers expose dead bodies (21 Mar 2019)

 

Trump: I didn't get a thank you for McCain funeral (20 Mar 2019)

 

Dutch PM loses senate majority to populists - exit poll (21 Mar 2019)

 

Korea spycam porn: 1,600 fall victim and four men arrested (20 Mar 2019)

more »

 

SF Gate

 

Astrology app set to disrupt mystical services sector (20 Mar 2019)

 

How the internet travels across oceans (20 Mar 2019)

 

Ship traffic, March 21 (20 Mar 2019)

 

The world's first VR gym is opening in San Francisco. We tried it. (20 Mar 2019)

 

Facebook to overhaul ad systems to prevent discrimination (19 Mar 2019)

 

Murdoch family forms new Fox, Paul Ryan joins board (19 Mar 2019)

more »


Site feed Updated: 2019-Mar-21 00:00