README

delphi-google-oauth2

Browser enabled TCustomAuthenticator for Delphi TRestClient

This unit is inspired on Delphi's OAuth2 code but:

• Allows authorization via external browser
• Uses PKCE flow for added security
• Allows generation of new tokens when they expire (using the refresh token)

Dependencies

• You will need libeay32.dll and ssleay32.dll in the same folder of your application's .exe file for the Authenticator to work (because PKCE uses SHA256).
• You will need Indy

Test authenticator using the demo application (Google_Email_Example)

Open the project and fill in your Application's ClientID and ClientSecret on procedure googleAPI_prepare:

  // Application specific options (created on Google's console)
  DCSOAuth2Authenticator.ClientID              := 'your ClientID goes here';      // ClientID created on console.developers.google.com
  DCSOAuth2Authenticator.ClientSecret          := 'your ClientSecret goes here';  // ClientSecret for the application registered on console.developers.google.com