Does LinkedIn support OAuth 2.0 grant_type "client_credential" rather than "authorization_code" for closed API? i.e. does LinkedIn support OAuth 2.0 fully?
What is the endpoint for get oauth2_access_token? e.g. https://api.linkedin.com/uas/oauth2/accessToken
What is the endpoint for posting a job using OAuth 2.0? e.g. https://api.linkedin.com/v2/jobs
In our case (2-legged OAuth 2.0), we don't need user's authorization/involvement, no nounce, no signature, neither the redirect_url. we simple exchange client_id, client_secret for oauth2_access_token.
I have seen the 1-legged OAuth 1.0 php implementation from LinkedIn.