In the process of verifying gh-15852, another issue with URI was discovered.
This commit adds tests to the uri-computing methods and changes them to use
UriComponents instead of URI.
Issue gh-15852
Initially it was proposed to put ClientSettings as a top level class, but
to be consistent with ProviderDetails, this commit moves ClientSettings to
be an inner class of ClientRegistration
Issue gh-16382
# Conflicts:
# oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/registration/ClientSettings.java
This ensures that ClientRegistration.Builder.ClientSettings cannot be null.
This has a slight advantage in terms of null safety to making this check
happen in the build method since the Builder does not have a null field
either.
Issue gh-16382
This changes `InMemoryOAuth2AuthorizedClientService.loadAuthorizedClient`
(and its reactive counterpart) to always return `OAuth2AuthorizedClient`
instances containing the current `ClientRegistration` as obtained from
the `ClientRegistrationRepository`.
Before this change, the first `ClientRegistration` instance was cached,
with the effect that any changes made in the `ClientRegistrationRepository`
(such as a new client secret) would not have taken effect.
Closes gh-15511
The parametersCustomizer was introduced in 6.4.0-M4 with
DefaultOAuth2TokenRequestParametersConverter. However, it cannot be
applied to all parameters and so does not fully solve gh-11298.
This commit moves the customizer to the abstract class so it can be
applied to all parameters.
Closes gh-15939
ClientRegistrations now provides the fromOidcConfiguration
method to create a ClientRegistration.Builder from a map
representation of an OpenID Provider Configuration Response.
This is useful when the OpenID Provider Configuration is not
available at a well-known location, or if custom validation
is needed for the issuer location (e.g. if the issuer is only
reachable via a back-channel URI that is different from the
issuer value in the configuration).
Fixes: gh-14633
