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RE: Headless Delivery Refresh Token with PKCE Flow

Stephen Greco, modified 4 Years ago.
Headless Delivery Refresh Token with PKCE Flow
New Member Posts: 7 Join Date: 1/22/21 Recent Posts

I am struggling to obtain refresh tokens wihen using the headess-delivery with the PKCE OAuth 2.0 Flow.  There doesnt seem to be any documentation on how to obtain a new token using the refresh token.  The PKCE flow is wokring fine for obtaining the original token but when I request a new token using the refresh_token, it is returning an error 'unauthorized client'.  I am simply looking for some sort of example or documentation on how to do this.

oauth2 delivery api
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Javier Gamarra, modified 4 Years ago.
RE: Headless Delivery Refresh Token with PKCE Flow
Expert Posts: 348 Join Date: 2/12/15 Recent Posts

Hi! 

I'm not an expert on OAuth (maybe the security team can chime in on this)...

Can you paste the request you are trying? I've tried to refresh a token (but with another flow) with a request like this and I get a new valid access token:


curl -X "POST" "http://localhost:8080/o/oauth2/token" \
     -H 'Content-Type: application/x-www-form-urlencoded; charset=utf-8' \
     --data-urlencode "client_id=id-64eaf18c-49bb-6c9c-7b9a-84f17f65d21" \
     --data-urlencode "client_secret=secret-98fecb7d-3421-78e4-bca5-955b08f7f58" \
     --data-urlencode "grant_type=refresh_token" \
     --data-urlencode "redirect_uri=http://localhost:8080/" \
     --data-urlencode "refresh_token=2f485f80a58f3bb3e964ddbbe3da71561d1f459a75a1ec58365bd39a3762c9d"
 

Stephen Greco, modified 4 Years ago.
RE: RE: Headless Delivery Refresh Token with PKCE Flow
New Member Posts: 7 Join Date: 1/22/21 Recent Posts

Thats for the response Javier.  This request does work for me when using the standard Authorization Code flow, but when using the Authorization with PKCE, there is no client_secret, so this request will not work. 

I did base my other attempts off of this and tried many different combinations, and I keep getting the unauthorized_client error but no other details.  Instead of the client_secret the PKCE flow utiliizes the code verifier and code challenge to obtain the first token, I have tried to send those appropriate values as well with no success.

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Tomáš Polešovský, modified 4 Years ago.
RE: Headless Delivery Refresh Token with PKCE Flow
Liferay Master Posts: 677 Join Date: 2/13/09 Recent Posts

but when using the Authorization with PKCE, there is no client_secret, so this request will not work. 

It works for me.

curl 'http://localhost:8080/o/oauth2/token' \
  -H 'Content-Type: application/x-www-form-urlencoded' \
  --data 'client_id=my-pkce-client' \
  --data 'grant_type=refresh_token' \
  --data 'refresh_token=bfc9878164882767b19a9fa29b13ecc6f1c9c124a68d426158ec4bb3e7d' \
  --compressed