[GeoNode-devel] Working on GeoServer OAuth2 authentication

[Alessio Fabiani]

Dear all,
working on a refactoring of the GeoNode-GeoServer Auth subsystem, the idea
would be to use the OAuth2 Protocol to allow GeoServer grab the
Authorizations from GeoNode (or from a common OAuth2 Provider).

The first step is to allow GeoServer to authenticate through the OAuth2
Protocol.

I just finished (almost) a new GeoServer extension allowing users to do
that.

Here [1] you can find a community module allowing GeoServer to authenticate
through the OAuth2 protocol.

The basic "oauth2" module contains the general infrastructure.

The "oauth2-google" module is an extension showing how is possible to use
Google OAuth2 Provider to authenticate and validate the "access_token".

Moreover the Security Filter also "simulates" an SSO based on OAuth2 by
injecting a provided "access_token" (which is then validated against the
configured OAuth2 Provider) similar to the GeoServer "AuthKey" module.

How the OAuth2 Filter works
=====================

1. The GeoServer GUI allows to configure the OAuth2 Service connection
parameters and select the GeoServer UserRoleService to use


​

2. The new filter may be added to the standard GeoServer Filter Chain


​
3. If not authenticated, GeoServer redirects the user automatically to the
Google Login Page


​4. The OAuth2 Protocol asks for Authorizations


​5. Accepting the authorization, the user is redirected to the GeoServer
endpoint


​

Best Regards,
Alessio Fabiani.

[1] - https://github.com/geosolutions-it/geoserver/tree/oauth2-filter

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Ing. Alessio Fabiani
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