This article explains how to authenticate your users with Google using GeneXus Access Manager (GAM).
1. Enter to the GAM's Backend and go to the Authentication Types section. Create a new OAuth 2.0 Authentication Type and define basic information in the General section: Name, Description, Images (optional), etc.
2. In the Configuration section you need to define, for the General, Authorization, Token and User Information tab, the following:
Client ID: client_id Value: <clientid>
Client Secret: client_secret Value: <clientsecret>
Redirect URL: redirect_uri Value: https://<server>/webapp
URL: https://accounts.google.com/o/oauth2/auth
Response type: response_type Value: code
Scope: scope Value: https://www.googleapis.com/auth/userinfo.email+https://www.googleapis.com/auth/userinfo.profile
State: state
Include ClientID and RedirectURL
Additional Parameters for Smart Devices: access_type=offline
Response:
Access code TAG: code
Error description TAG: error_description
URL: https://accounts.google.com/o/oauth2/token
Header Cotent type: Content-type Value: application/x-www-form-urlencoded
Grant type: grant_type Value: authorization_code
Include All
Aditional Parameters:
Response:
Access token TAG: access_token
Token type TAG: token_type
Expires in TAG: expires_in
Refresh Token TAG: refresh_token
Error description TAG: error_description
Validate external token = True
Refresh token URL = leave it empty. Uses the same URL used to ask for a Token.
URL: https://www.googleapis.com/oauth2/v1/userinfo
Method: Get
Header Content type: Content-type Value: application/json;charset=utf-8
Do not include anything.
Email TAG: email
Verified Email Tag: verified_email
External ID TAG: id
Name TAG: email
First name TAG: given_name
Last name TAG: family_name
Gender TAG: gender Values: M=male&M=hombre&F=female&F=mujer
URL Image TAG: picture
URL Profile TAG: link
Language TAG: locale
Error description TAG: error_description
As of GeneXus 15 Upgrade 11.
GAM - OAuth 2.0 Authentication Type