![]() The Server, sends back the user information, as requested in the Scope parameter. This is sent to the userInfo endpoint in the Server. Having the Access Token, allows the requisitioner to access the user data, as put forth in the Scope - a parameter which is sent with the Authorization Code (In Stage 3). This ensures that the request is originating from the correct / authentic / expected source.Īfter verifying the Code Verifier and the Code Challenge strings, the Server generates an Access Token, which is sent back to the Drupal Backend. The Code Verifier and Code Challenge authentication is done by the OAuth Server. The same Authorization Code is then sent back to the Server along with the Code Verifier. This Authorization Code is then sent back to the Drupal Backend. The user is then able to see the Server Login page, wherein they type in the credentials.Īfter User Credentials verification, an Authorization Code is generated. This Code Challenge is then sent along with the call to the Authorization End Point of the OAuth Server. ![]() When the Login process is started, a couple of strings are generated. On the Login form, once they click on the secure Login button, the flow is redirected to the Drupal Backend. The User starts the Login Process from the ReactJS login Page. The user will be logging into the Drupal System using the credentials of the Server. The authentication system has 3 major components namely, the ReactJS Front End, Drupal 9.x Back End and the Custom OAuth Server. The users are authenticated by a Popular Custom OAuth Server, which only supports PKCE Authentication Flow, as opposed to the Standard Authorization Grants. Who This Book Is For Web application designers, developers, and Drupal enthusiasts.Headless Drupal is the OAuth Client here.
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